Description
Quick answer: This is the genuine ResMed single limb valve adapter for the Astral ventilator (part 27941). The Astral supports different circuit types through interchangeable circuit adapters, and this one configures the device for a single-limb circuit with an exhalation valve. The adapter must match the circuit type in use — after fitting it, the Astral requires a “learn circuit” procedure. Use as directed by the patient’s clinical team.
What’s included
- 1 × ResMed Astral single limb valve adapter (part 27941)
Breathing circuit, exhalation valve, and other components sold separately.
About this adapter
The Astral is compatible with a range of circuit configurations — single limb, single limb with valve, and double limb — and it uses interchangeable circuit adapters to connect to each type. Before connecting the patient circuit, the adapter specific to the required circuit type must be fitted to the device. This adapter is the one used for single-limb circuits with an exhalation valve, where exhaled air is released through a valve rather than a separate expiratory limb. Because the ventilator calibrates to the circuit, the “learn circuit” procedure must be run whenever the adapter or circuit type is changed.
Key features
- Genuine ResMed adapter (27941) — for the Astral ventilator.
- Configures single limb + valve setups — matches the device to the circuit type.
- Interchangeable design — swap adapters when the circuit configuration changes.
- Required before circuit connection — the correct adapter must be fitted first.
- Clinician-directed use — fit and verify per the Astral clinical guide.
Specifications
| Specification | Detail |
|---|---|
| Product type | Circuit adapter |
| Compatible ventilator | ResMed Astral series |
| Circuit configuration | Single limb with exhalation valve |
| Function | Connects the device to the matching circuit type |
| Included | Adapter only |
| ResMed reference / SKU | 27941 |
| Prescription | Required — clinician-directed |
| Brand | ResMed |
Setup notes
Fit the correct adapter for the prescribed circuit type before connecting the patient circuit, following the Astral clinical guide. After changing the adapter or any circuit component, run the learn circuit procedure so the ventilator recalibrates to the new setup. Confirm that the adapter, circuit, and valve you’re using match the prescribed configuration.
Frequently asked questions
What does the circuit adapter do?
It configures the Astral for a specific circuit type. The device uses interchangeable adapters, and the correct one must be fitted before connecting the patient circuit.
Which configuration is this one for?
Single-limb circuits with an exhalation valve.
Do I need to do anything after fitting it?
Yes — run the Astral’s “learn circuit” procedure so the device recalibrates to the circuit.
Which ventilator does it fit?
The ResMed Astral series.
Do I need a prescription?
Yes — ventilator components are used under clinical direction. Confirm your prescribed setup with your provider.
Can I get it delivered in Brooklyn or shipped nationwide?
Yes — Stark Medical Supplies offers local pickup and delivery in Brooklyn and across NYC, plus USPS shipping throughout the continental U.S.
This is a prescription medical device component for use under clinical direction. Follow the Astral clinical/user guide and your healthcare team’s instructions, including fitting the correct adapter before connecting the circuit and running the required “learn circuit” procedure.
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